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    <meta charset="UTF-8">
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    <title>Document</title>
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    <script>
        // filter筛选数组
        var arr = [12, 66, 4, 88, 3, 7];
        var newArr = arr.filter(function (value, index) {
            // return value >= 20;
            return value % 2 === 0;// 求偶数
        });
        console.log(newArr);
    </script>
</body>

</html>